Update pom to build using ors.war

[rabidllama]

Here's what I did

Build ors via mvn:package

---

Here's what I got

output war is openrouteservice-5.0

---

Here's what I was expecting

It would be beneficial to have a consistent build file name so that the endpoint is always http://localhost:8082/ors/... rather than having to change the endpoint whenever a version increase happens

---

Here's what I think could be improved

Modifying the pom.xml to include a ors in the build section will always build the war as ors.war

[sfendrich]

Closed by #439